package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Permission;
import com.itheima.service.PermissionService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service(interfaceClass = PermissionService.class)
@Transactional
public class PermissionServiceImpl implements PermissionService {
    @Autowired
    private PermissionDao permissionDao;

    @Override
    public PageResult findPage(QueryPageBean queryPageBean) {
        Integer currentPage = queryPageBean.getCurrentPage();
        Integer pageSize = queryPageBean.getPageSize();
        String queryString = queryPageBean.getQueryString();

        PageHelper.startPage(currentPage,pageSize);
        Page<Permission> page = permissionDao.queryByCondition(queryString);

        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public void add(Permission permission) {
        permissionDao.add(permission);
    }

    @Override
    public void deleteById(Integer id) {
        //判断权限是否关联到角色
        long count = permissionDao.findCountByPermissionId(id);
        if(count > 0){
            new RuntimeException();
        }
        //无关联，直接删除
        permissionDao.deleteById(id);
    }

    @Override
    public void edit(Permission permission) {
        permissionDao.edit(permission);
    }

    @Override
    public Permission findById(Integer id) {
        return permissionDao.findById(id);
    }

    @Override
    public List<Permission> findAll() {
        return permissionDao.findAll();
    }
}
